ANSCO 130 vs. Agitation - wassup wi' dat...?

Discussion in 'B&W: Film, Paper, Chemistry' started by Sparky, Oct 29, 2007.

  1. Sparky

    Sparky Member

    Messages:
    2,099
    Joined:
    Jun 19, 2005
    Location:
    Los Angeles
    Shooter:
    Multi Format
    Is it just me - or are others here finding HUGE differences in resulting density (up to 2 stops) when using different agitation methods...? This is a problem for me since I've been trying to make some large prints based on small test strips - but am finding the density isn't even CLOSE...!! Any hints here? Or have I just lost my mind (yet ANOTHER distinct possibility!).
     
  2. Paul Howell

    Paul Howell Member

    Messages:
    3,076
    Joined:
    Dec 23, 2004
    Location:
    Phoeinx Ariz
    Shooter:
    Multi Format
    what paper are you using? I have not found there to be a 2 stop differance with the papers I have used, Kodak Polycontrast, Ilford VC, Forma and Salvic graded. I tilt the tray once every 30 seconds.
     
  3. OP
    Sparky

    Sparky Member

    Messages:
    2,099
    Joined:
    Jun 19, 2005
    Location:
    Los Angeles
    Shooter:
    Multi Format
    Forte Polygrade. Except that with the same paper i get perfectly consistent results in dektol. I thrash the tests about a little with the tongs - but I'm doing 20x24 test prints in 16x20 trays - so I'm using the 'towel method' to agitate the bigger prints.
     
  4. juan

    juan Subscriber

    Messages:
    1,800
    Joined:
    May 7, 2003
    Location:
    St. Simons I
    Shooter:
    Multi Format
    Yes, indeed. I've found that I can get the effect of water bath development by agitating in Ansco 130 for about 30-seconds, then letting the print simply sit in the developer. I believe I have gotten increased contrast through more rapid agitation, but I haven't really tested to be sure. I find the contraction very useful.
    juan
     
    Last edited by a moderator: Oct 29, 2007
  5. Ian Grant

    Ian Grant Subscriber

    Messages:
    18,820
    Joined:
    Aug 2, 2004
    Location:
    West Midland
    Shooter:
    Multi Format
    Are you using the Agfa 130 formula which is an MQ developer or the Agfa-Ansco 130 which is an MQ Glycin developer and quite different.

    Normally with print development agitation doesn't make a lot of difference but if your using glycin it might, you'll be getting more oxidation because the large print isn't submerged all the time, you might need to increase the development time to compensate. I'm assuming its the large prints that are under-developed.

    Ian
     
  6. OP
    Sparky

    Sparky Member

    Messages:
    2,099
    Joined:
    Jun 19, 2005
    Location:
    Los Angeles
    Shooter:
    Multi Format
    Hi Ian - yup... it's the glycin version (i'm using the standard recipe) cut 1:1. I guess the ONLY WAY for me to get a consistent result is to tape my tests to a mylar sheet the same size as what I'm developing and put it through IDENTICAL agitation...!